The side-by-side overlap of p orbitals produce a pi bond. In the field of chemistry, pi bonds are covalent chemical bonds.
pi bond
A p bond is the result of the sideways overlap of two parallel p orbitals.
sigma, pi
overlapping that occurs along the orbital axis of 2 atomic orbitals is known as linear overlapping and these orbitals are called sigma atomic orbitals therefore these bonds are known as sigma bonds
In methyl cation (CH3+), there are three sigma bond orbitals available for overlap with the vacant p orbital. These sigma bond orbitals originate from the three C-H bonds in the methyl group.
p-block
By the overlap of atomic orbitals. In valence bond theory these atomic orbitals may be s, p or d orbitals or "hybrids" such as sp3. This is a complex area and the above is a very simple explanation.
An ethyl cation is more stable because the carbon adjacent to the positively charged carbon has three sigma bond orbitals available for overlap with the vacant p orbital, whereas methyl cation does not have any sigma bond orbitals available for overlap with the vacant p orbital.
sp3 orbitals are similar in shape to p orbitals however one side is much larger than the other - hence you have a lopsided dunbell shape orbital
Double and triple bonds each have another type of bond different from the initial single bond present between the two bonded atoms. The sigma bond, the initial single bond, is formed through a head-on overlap of two atomic orbitals. Rotation about this bond does not change the overlap, and so rotation is allowed.But double and triple bonds have pi bonds, formed by side-on overlap between the atomic orbitals (typically either p or d orbitals). These bonds surround the sigma bond and were rotation to occur, the orbitals involved with the pi bonds would cease to overlap and these bonds would be broken.Therefore, the specific bond that restricts rotation about the axis of a double or triple bond would be the pi bond(s) involved.
sp3 sp3 orbitals overlap Could you please explain why? :) Thank you!!
this is not a general rule. pi orbitals are always higher in energy than sigma orbitals due to side wise overlapping which is less effective than head on overlappig. however in atoms with atomic number less than 7 the sigma orbital due to overlapping of p orbitals is higher in energy than the pi orbitals formed due to sidewise overlapping of p orbitals